PHOTO: Arrieta's young son pours champagne into dad's mouth

Chicago Cubs right-hander Jake Arrieta had plenty of reasons to celebrate following his complete-game shutout win over the Pittsburgh Pirates in Wednesday's National League wild-card game.

While he complained of arm fatigue after the 113-pitch outing, Arrieta had no problem lifting up his young son Cooper during the postgame celebration, and son rewarded dad with a celebratory drink.

Arrieta's Cubs travel to St. Louis to open Game 1 of the NLDS on Friday.